I admit to substantial ignorance here, but can anyone who's using fabric, or for whom these patches to fabric are an important improvement, speak to any kind of pro/con comparison they did with func (https://fedorahosted.org/func/)?

I've been using func for parallel deployment to 15 - 20 servers for about a year now, but I have to admit I didn't really do any research into other options at the time. Its written by the guys who wrote yum and cobbler, which are already core to my setup, so it seemed natural to just stay in their ecosystem. Thing is I never hear about anyone else using it, so I'm curious if anyone did more diligence than I and had specific reasons of choosing one or the other.